有四种类型的病毒程序：外壳型、入侵型、搡作系统型和源码型。

There are four main types of viruses: shell, intrusive, operating system and source code.

youdao

有四种类型的病毒程序：外壳型、入侵型、搡作系统型和源码型。

There are four main types of viruses: shell, intrusive, operating system and source code.

youdao